Evaporator.



J. HARRIS & n. 'H. THOMAS.

EVAPORATOR.

APPLICATION FILED NOV. 29, 1915.

1 203,6 1 4 Patented Nov, 7, 1916.

unrrnn s'ra'rns rn'rnnr @FFTCE.

JOHN HARRIS,- OF SHEFFIELD, ENGLAND, AND DAVID HIBBERT THOMAS, F MORRISTON, WALES.

EVAPORATOR.

To all whom it may concern Be it known that we, lei-ix Hxmus and DAVID Himnnn'r TnoMAs, subjects of the King of England, and residents,respectively,

of Sheffield, England, and Mcrriston, Wales,

for acid, alkaline or neutral liquors,

the construction, arrangement and operation thereof. The pipe-like vessels have sometimes been arranged side by side with a packing of refractory material between them so that their bases form the roof of the flue, and sometimes they have been separated to enable the heating gases to play'all around them, but according to the present invention a combination of these dispositions is em iloyed; that is to say the p pe-like vessels are arranged side by side in two or more rows to form preferably horizontal batlies with ports at alternate ends so that the flue gases first pass along the bases of the lowermost row, thence the lower parts of the row above and so on to the chimney. The liquor to be concentrated is fed separately to each vessel in the top row, whence it flows successively to the corresponding until it reaches a common discharge channel, so that the concentration is divided into a number of separate processes carried on simultaneously and corresponding to the number of vessels in each. row.

The present invention also comprises improvements in the construction of the pipelike vessels hereinafter. more particularly detailed.

In the accompanying drawings :Figure 1 is a sectional elevation and Fig. 2 a transverse section of apparatus according to this invention.

A is the fireplace and B the heating flue across which the pipe-like evaporating vessels C extend, the vessels being arranged slde as shownin two or more rows so as to form baffles. Ports D are provided at alternate ends of each bafile row, so that the heating gases from the fireplace A first pass below the lowest row of vessels C, then by side Specification of Letters Patent.

to their upper portions and vessel in each row below,

Patented Nov. 7, 1916;

Application filed November 29, 1915. Serial No. 64,074.

through the port D at the end of that row into the space below the next row and so on to the chimney E; Thus the greatest heat is applied where itis most required, to the bases of those vessels containing the'mo'st concentrated liquor, while thereafter the heat is mainly applied to the bases of the other vessels C (owing to the upward course of the gases) although the upper portions of all the vessels C are exposed to the hot flue gases. V

In some cases may touch one another without any packing, but where refractory packing is required it is preferred to use asbestos rope F or the like. To'enable this to be easily applied holes G are made in one or both of the the vessels C in each row side walls J. ofthe'flue'B adjacent to those through which the vessels C extend. It will then only be necessary to insert and push or draw the rope packing through the holes G, the diameter of the rope being such that the latter will rest in the space between adjacent vessels.

The bafi'le' rows of vessels 0 may either be arranged substantially horizontally as shown or they may slope upward from end to end, the end at which the port D is situated being the higher one of each baffle row.

The liquor to be concentrated is fedvseparately to each of the vessels C in thetopmost baflie row through funnels K, whence it flows to the corresponding vessel in the row below and so on until it is finally discharged from the vesselsin the lowest row into a common channel L. Thus there are a number of separate concentration apparatus equal to the number of vessels in each row being simultaneously operated.

The ends of the vessels C extend through the side walls of the flue B as shown in Fig. 2 and an exit opening C is provided in one end wall of each vessel. An inlet opening is formed at the other end of each vessel and the rows of vessels are alternately arranged so that the inlets are situated below the exits of the vessels above them. A funnel C extends from the inlet of each of the vessels in the rows below the topmost one up to the exit C of the vessel immediately above it. These funnels open below the exits of the upper vessels on the side adjacent thereto but on the opposite side they are extended above the exits, so that'if ebullition "Sh d ause a dden a cel ration in the flow of the liquor the latter will be caught by this extended part of the funnel instead of being splashed on to the adjacent fittings.

Each of the vessels C is provided with a transverse weir or the like C disposed adjacent to its exit 0 and governing the height of liquor in the vessel. The exit C is below the level of the top of the weir C and has an opening at least as large as that above the weir. Outside the vessel the lower side of the exit is preferably sloped to a spout to prevent liquor from running along the exterior surface ofthe vessel. Inside the vessel this lower side of the exit is also preferably sloping as shown at C to a line above the floor of the vessel but below the top level of the weir C Thus, if there should be av sudden surge of liquor over the weir C thespaoe between the weir and the exit will tend to break its force and so prevent splashing outside the exit opening;

tion will be given off through the exits C and the funnels C and may be collected by providing additional side walls M. Doors these side walls to enable easily placed n position dlsmantllng the appahl are provided in or renewed without ratus.

jl Vhat we claim and Letters Patent is: V

1. In an evaporator, the combination of a flue, a plurality of series of pipe-like evaporating vessels extending across the flue, each series comprisinga plurality of said'vessels desire to secure by arranged side by side to constitute a baflie preventing direct upward movement of gases in the fine throughout the area of said series of vessels, means at one side of each series of vessels for conducting gases from the space below to the space above said ves 'sels, said means being arranged alternately at opposite sides of the fine, and means for conducting liquor from each vessel in one sense to the corresponding vessel 1n the next lower series, substantially as and for the purpose set forth, 7

2. In an evaporator, the combination of a fine, a plurality of series of pipe-like evapo- Copies of this patent may be obtained for extending up The vapors evolved during the concentra rating vessels extending across the fiue, each series comprisinga plurality of said vessels arranged side by side, packing closing all of the spaces between the vessels in each series whereby each series of said vessels forms a batlle preventing direct. vertical movement of the heating means through any part of the area of said series, means atone side of each series of vessels for conducting gases from the space below to the space above said vessels, said means being arranged alternately at opposite sides of the flue, and means for conducting liquor from each vessel in he upper series to a corresponding vessel in a lower series, substz-intially as and for the purpose set forth.

3. In an'evaporator the combination of a flue, means for passing hot. gases there through, pipelike evaporating vessels extending across the fine, through its walls and i a plurality of rows to form preferably horizontal bafiies for the flue gases, holes in the flue walls between adjacent vessels to enable asbestos rope packing to be applied between the vessels and means for causing liquor to flow from each vessel. in one loafiie row to a corresponding vessel in the row below, substantially as set forth. V

4:. In an evaporator a pipe vessel having a weir adjacent to 'one end. limiting the height of liquor in the vessel and an exit in the weir end of the vessel having a larger openingithan that above the weir and situated below the top level of the weir, substantially asset forth.

r In an evaporator a pipe vessel having a weir adjacent to one end limiting the height of liquor in the vessel, an exit in the weir end of the 'vesselhaving a larger opening than that above the weir and situated below the top level of the weir, and a sloping lower side to the exitextending from the bottom thereof within the vessel to a line above its floor but below the top level of the disposed side by side in weir substantially as set forth.

In testimony whereof we have signed our names to this specification.

JOHN HARRIS. DAVID HIBBERT THOMAS.

five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

